package com.jz.community.basecomm.net.retrofit;

import com.google.gson.Gson;
import com.jz.community.basecomm.bean.BaseResponseInfo;

import java.io.IOException;
import java.lang.reflect.Type;

import okhttp3.Response;
import okhttp3.ResponseBody;
import retrofit2.Converter;

/**
 * Created by Tony.Fan on 2018/12/18 16:16
 */
public class GsonResponseBodyConverter<T> implements Converter<ResponseBody, T> {

    private final Gson gson;
    private final Type type;


    public GsonResponseBodyConverter(Gson gson, Type type) {
        this.gson = gson;
        this.type = type;
    }

    @Override
    public T convert(ResponseBody value) throws IOException {

        String response = value.string();
        //先将返回的json数据解析到Response中，如果code==200，则解析到我们的实体基类中，否则抛异常
        Response httpResult = gson.fromJson(response, Response.class);
        if (httpResult.code() == 200) {
            //200的时候就直接解析，不可能出现解析异常。因为我们实体基类中传入的泛型，就是数据成功时候的格式
            return gson.fromJson(response, type);
        } else {
            BaseResponseInfo errorResponse = gson.fromJson(response, BaseResponseInfo.class);
            //抛一个自定义ResultException 传入失败时候的状态码，和信息
            throw new ApiException.ResponseThrowable(errorResponse.getMsg(), errorResponse.getCode());
        }
    }

}
